<template>
    <div class="login">
        <section class="form_container">
            <div class="manage_tip">
                <span class="title">QUAN后台资金管理系统</span>
                <el-form :model="loginUser" :rules="rules" ref="loginForm" label-width="60px" class="loginForm">
                  <el-form-item label="邮箱" prop="email">
                    <el-input v-model="loginUser.email" palceholder="请输入邮箱"></el-input>
                  </el-form-item>
                  <el-form-item label="密码" prop="password">
                    <el-input v-model="loginUser.password" palceholder="请输入密码" type="password"></el-input>
                  </el-form-item>
                  <el-form-item>
                    <el-button type="primary" @click="submitForm" class="submit_btn">登录</el-button>
                  </el-form-item>
                  <div class="tiparea">
                    <p>还没有账号？现在<router-link to="/register">注册</router-link></p>
                  </div>
                </el-form>
            </div>
        </section>
    </div>
</template>
<script>
import jwt_decode from 'jwt-decode'
export default {
    data() {
      return {
        loginUser:{
          email:'',
          password:'',
        },
        rules:{
          email:[
            {type:'email',required:true,message:'邮箱格式不正确',trigger:'blur'}
          ],
          password:[
            {required:true,message:'密码不能为空',trigger:'blur'},
            {min:6,max:30,message:'长度在6到30个字符之间',trigger:'blur'}
          ],
        }
      }
    },
    methods: {
      submitForm(){
        //也可不传参时，则调用时 this.$refs['registerForm'] / this.$refs.registerForm 直接使用表单的ref值
        this.$refs.loginForm.validate(valid=>{
          if(valid){
            this.$axios.post('/api/users/login',this.loginUser).then((res) => {
              //拿 token
              const {token}=res.data
              //存储到ls
              localStorage.setItem('eleToken',token)

              //解析token 
              // decoded为空表示未授权，否则有授权
              const decoded=jwt_decode(token)
              // console.log(decoded)
              // 将解析后的token存储到vuex中
              //1.判断是否授权
              this.$store.dispatch('setAuthenticated',!this.isEmpty(decoded))
              this.$store.dispatch('setUser',decoded)
              this.$router.push('/index')
            })
          }
        })
      },
      isEmpty(value){
        // 判断值为空的方法，为空返回true
        return (
          value===undefined ||
          value===null ||
          (typeof value === 'object' && Object.keys(value).length===0) ||
          (typeof value === 'string' && value.trim().length===0)
        )
      }
    },
}
</script>
<style scoped>
.login {
  position: relative;
  width: 100%;
  height: 100%;
  background: url(../assets/img/bg.jpg) no-repeat center center;
  background-size: 100% 100%;
}
.form_container {
  width: 370px;
  height: 210px;
  position: absolute;
  top: 20%;
  left: 34%;
  padding: 25px;
  border-radius: 5px;
  text-align: center;
}
.form_container .manage_tip .title {
  font-family: "Microsoft YaHei";
  font-weight: bold;
  font-size: 26px;
  color: #fff;
}

.loginForm {
  margin-top: 20px;
  background-color: #fff;
  padding: 20px 40px 20px 20px;
  border-radius: 5px;
  box-shadow: 0px 5px 10px #ccc
}
.submit_btn {
  width: 100%;
}
.tiparea {
  text-align: right;
  font-size: 12px;
  color: #333;
}
.tiparea p a{
  color: #409eff;
}
</style>